<template>
      <div class="app-container">
        <el-form label-width="120px">
          <el-form-item label="信息描述">
            <el-tag type="info">excel模版说明</el-tag>
            <el-tag>
              <i class="el-icon-download"/>
              <a :href=" '/static/01.xls'">点击下载模版</a>
            </el-tag>
          </el-form-item>
          <el-form-item label="选择Excel">
            <el-upload
              ref="upload"
              :auto-upload="false"
              :on-success="fileUploadSuccess"
              :on-error="fileUploadError"
              :disabled="importBtnDisabled"
              :limit="1"
              :action="BASE_API+'/admin/edu/subject/addSubject'"
              name="file"
              accept="application/vnd.ms-excel">
              <el-button slot="trigger" size="small" type="primary">选取文件</el-button>
              <el-button
                :loading="loading"
                style="margin-left: 10px;"
                size="small"
                type="success"
                @click="submitUpload">上传到服务器</el-button>
            </el-upload>
          </el-form-item>
        </el-form>
      </div>
    </template>
<script>
export default{
    data(){
        return{
            BASE_API: process.env.BASE_API, // 接口API地址
            importBtnDisabled: false, // 按钮是否禁用,
            loading: false
        }
    },
    created(){

    },
    methods:{
        //点击按钮上传文件到接口里
        submitUpload(){
            this.importBtnDisabled = true
            this.loading = true
            this.$refs.upload.submit()
        },
        //上传成功
        fileUploadSuccess(response){
            this.loading = false
            this.$message({
            type: 'success',
            message: '添加课程分类成功'
            })
            //跳转课程分类列表
            this.$router.push({path:'/subject/list'})
        },
        //上传失败
        fileUploadError(){
            this.loading = false
            this.$message({
            type: 'error',
            message: '添加课程分类失败'
            })
        }
    }
}
</script>